*** This bug is a duplicate of bug 1768610 ***
https://bugs.launchpad.net/bugs/1768610
Yes, happened to me also. Kubuntu 18.04.1
Yesterday (Nov 27) suddenly (after auto upgrade of the system) nvidia stopped
working (switched to nouveau, probably).
Upgraded to Kubuntu 18.10
This actually made the situation even worse - stuck on 640x480 resolution.
Had nvidia-390 installed at the moment, but the system wasn't using it.
After some looking around, installed:
sudo apt install nvidia-dkms-410 xserver-xorg-video-nvidia-410 nvidia-
kernel-source-410
which made the situation look better: resolution was again native (1920x1200)
and nvidia-settings launched and showed 410 driver running.
But in the Steam games, it showed that llvm driver was being used. And games
such as Wolfenstein New Order (uses proton wine) didn't even launch.
After some more fiddling around, actually using the Kubuntu GUI tool
(System Settings > Driver Manager > Nvidia > 410) fixed the situation.
Apparently the GUI tool does it somehow better than installing the
nvidia package manually.
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1752938
Title:
Upgrading Ubuntu 18.04 disables GPU hardware acceleration
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